Two root causes fixed:
1. Skeleton binding fix was skipped because `skeleton` variable was null at the
time of the check (assigned AFTER the mesh fix block). Moved skeleton
discovery BEFORE the mesh binding fix so the MeshInstance.skeleton path
is correctly set to "..".
2. Skin deformation wasn't triggering because `_update_skin()` (which calls
`force_update_all_bone_transforms()`) was throttled to 30fps AND ran BEFORE
the AnimationPlayer's `_process()` due to tree order. AnimationPlayer.advance()
sets bone poses but does NOT emit `bone_pose_changed`, so the MeshInstance
never knew to re-compute its vertex buffers. Fixed by using `call_deferred`
to ensure `_update_skin()` runs AFTER all `_process()` calls (including AP),
and removing the throttling so it runs every frame.
Co-Authored-By: Claude 4.7 <[email protected]>
HermesandClaude 4.7
d297da4c35